Pulse-Monitored Alarm Bracelet for Sleep Detection

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Solution Overview

Problem

Conventional alarms are ineffective in detecting and preventing sleep in situations where vigilance is crucial, such as for deployed soldiers or professionals in safety-sensitive roles, as they require precise timing settings that are often impossible to anticipate.

Innovation Solution

A pulse-monitored, silent alarm bracelet that calibrates to the wearer's unique resting heart rate, vibrating when a predetermined decrease in pulse rate indicates sleep onset, with adjustable vibration levels and modes for customizable alertness, powered by rechargeable batteries and featuring Bluetooth connectivity for data sharing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional alarms are used, then the alarm can be set to a specific time, but the alarm is ineffective when sleep occurs unexpectedly or cannot be anticipated

Engineering Contradiction:

Improvealarm effectivenessVSAvoidtiming setup requirement

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The bracelet performs self-calibration by automatically detecting and storing the wearer's pulse rate at wakefulness without requiring manual input. The system monitors pulse rate continuously and autonomously determines when sleep onset occurs, eliminating the need for user configuration and timing setup.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The invention replaces the mechanical time-setting mechanism of conventional alarms with a physiological monitoring system. Instead of relying on预设 time specifications, the system uses pulse rate detection and analysis to automatically identify sleep states and trigger alerts.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If the vibration strength is increased to ensure alertness, then the alarm becomes more effective, but the alarm may startle the individual

Engineering Contradiction:

Improvealertness effectivenessVSAvoidstartle effect

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The vibration alarm operates in progressive cycles, starting with low-intensity vibrations and gradually increasing to higher intensities if the initial alert is insufficient. This staged approach allows the wearer to be gently awakened without sudden startling, while still ensuring effective alertness restoration.

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The vibration intensity is dynamically adjusted based on the wearer's response and the severity of sleep onset. The system can modify vibration strength in real-time, escalating from subtle reminders to more intense alerts as needed, optimizing both effectiveness and comfort.

Inventive Principle:

Principle #15Dynamics

3Measurement precision

If the bracelet monitors pulse rate continuously to detect sleep onset, then sleep detection accuracy is improved, but energy consumption increases

Engineering Contradiction:

Improvesleep detection accuracyVSAvoidbattery consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The pulse monitoring operates continuously without interruption to maintain accurate detection of sleep onset. The system keeps the pulse sensor active and processes data in real-time, ensuring no sleep transitions are missed while optimizing power management to minimize energy consumption.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The monitoring system dynamically adjusts its measurement parameters and sampling frequency based on the wearer's activity state. During periods of stability, monitoring intensity is reduced to conserve energy, while increasing precision when changes are detected, balancing accuracy and power consumption.

Inventive Principle:

Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Effectively alerts wearers to the onset of sleep, ensuring safety by providing a customizable and discreet alert mechanism that can be tailored to individual needs, while also recording sleep patterns and allowing for silent operation in appropriate contexts.

Implementation Method 1

the silent alarm triggers and vibration waves stimulate the wearer's arm

Methodology Applied

Scientific EffectVibration: Vibration

Implementation Method 2

monitors the average pulse rate of its wearer; when the pulse slows below the resting heart rate

Methodology Applied

Scientific EffectPulse rate detection:

Data Source

PatentUS9318013B2Vibrating, pulse-monitored, alarm bracelet

Publication Date: 2016.04.19 TEDI ZOHAR

AI summary

A vibrating pulse monitored alarm bracelet consists of control panel/display/capacitive touchscreen, a flash memory to collect and communicate data, two rechargeable batteries which serve as the power source for the device, sensors to collect pulse rate data, vibrating pads to provide silent, electric pulse stimuli, and a neoprene band to secure the device to its wearer.